Mower.



No. 885,447. PATENTED NOV. 6, 1906. 0.LORENSON.

MOWER. APPLICATION FILED APR-8. 1905.

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N0- 835,447. PATENTED NOV. 6, 1906. C. LORENSON.

MOWER.

APPLICATION FILED APR.8, 1905.

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CARL LORENSON, OF WVAUSA, NEBRASKA.

MOWER.

Specification of Letters Patent.

Patented Nov. 6, 1906.

Application filed April 8, 1905. Serial No. 254,543.

To all whom it may concern:

Be it known that I, CARL LORENSON, a citizen of the United States,residing at l/Vausa, in the county of Knox, State of Nebraska, haveinvented certain new and useful Improvements in Mowers; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to farm machinery, and more particularly tomowers, and has for its object to provide a machine of this kind whichwill operate to cut the stalks of growing plants and which will be soarranged that the cutter-bar will be movable vertically to compensatefor irregularities in the surface of the ground, the cutter-bar being soconstructed that it will continue to operate during this verticalmovement.

Another object is to provide a mower in which the cutter-bar will be soarranged that it may be adjusted to cut the plants at different pointsupon their stalks, the machine being thus especially adapted for cuttingweeds in fields of low grain, the machine being arranged to cut theweeds above the grain.

Other objects and advantages will be apparent from the followingdescription, and it will be understood that modifications of thespecific construction shown may be made and any suitable materials maybe used without departing from the spirit of the invention.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a top plan view of the present mower. Fig. 2 is a sideelevation show ing an end view of the cutterbar. Fig. 3 is a front viewshowing the outer end of the cutter-bar raised. Fig. 4 is a detail viewof the plate which carries the grain-wheel. Fig. 5 is a detail showingthe end of the cutter-bar. Fig. 6 is a detail showing the connection ofthe tongue with the shoe.

Referring now to the drawings, the present invention comprises a frameprovided with ground-wheels 6 and having a forwardly-ex tendingdraft-pole 7. The frame includes a laterally-offset portion 8, in whichthere is journaled a longitudinally-extending shaft 9, which isconnected with one of the groundwheels for operation thereby.

Extending laterally from the forward end of the offset portion 8 and ina direction opposite to that in which this portion is offset there is anarm 10, through which the shaft 9 passes, and this arm is braced by alongitudinally-extending rod 11, connected therewith and with therearward portion of the frame.

A metallic supplemental frame 12 is secured to the outer end of the arm10 and includes longitudinally-spaced front and rear walls 13 and 14,respectively, these walls having registering vertically-extending slots15 therein, which open through their upper ed es, and the walls areprovided with vertically-extending series of spaced perforations 16 atopposite sides of their slots. A cutterbar 17 is provided, including theusual finger bar and reciprocatory knife-bar and having spaced wings 18at its inner end, and these wings extend between the Walls 13 and 14 andhave registering bearings 19 therein, in which there is journaled acrank-shaft 20, the crank 21 of this shaft lying between the wings andbeing connected, by means of a short link 22, with the inner end of thereciprocatory knife-carrying member 23 ofv the cutter-bar for operationof the latter when the crank-shaft is revolved.

The end portions of the crank-shaft 20 extend beyond the wings 18 andproject through the slots 15, these end portions being revolubly engagedin pillow-blocks 24, which are slidably engaged in the slots 15 forvertical movement, these pillow-blocks having grooves 25 in their edges,in which the portions of the walls 13 and 14 at the sides of the slotsare engaged.

The crank-shaft 20 carries a sprocket 26 at its forward end, and thissprocket is connected, by means of a chain 27, with a sprocket 28,carried by the forward end of the shaft 9, so that rotation of thisshaft results in operation of the cutter-bar. It will be readily seenthat by reason of the above described arrangement the free end of thecutter may be moved vertically to com ensate for unevenness of theground over w ich the machine is traveling, and the pillowblocks 24 maybe moved vertically, and therewith the cutter-bar, to vary the positionof the cutter-bar with respect to the ground, the cutter being heldagainst downward movement of its inner end portion below the level ofits outer portion by means of a rod 29, engaged in a pair of the aliningopenings 16 below the cutter-bar, the outer end of the cut ter-bar beingsupported by a means to be now described.

Secured to the rearward face of the cutterbar 17 there are a pair ofbrackets 29, which have a rod 30 engaged therein extendinglongitudinally of the cutter-bar and lying behind the latter. This rodextends beyond the free end of the cutter-bar and is threaded for thereception of a nut 33. A metallic plate 31 is provided and is disposedagainst the free end of the cutter-bar. This plate has an opening 32adjacent to its rearward edge and in which the end. of the rod 30 isremovably engaged, the plate being movable pivotally on this rod, andthe nut 33 is en gaged with the rod outwardly of the plate to hold thelatter in position. A perforation 34 is formed through the plateadjacent to its forward edge, and a screw 35 is engaged in thisperforation and is removably engaged in the end of the cutter-bar, andthis screw is adapted for interchangeable engagement in a series ofthreaded apertures 35, formed in the end of the cutterbar, to hold theplate 31 at different points of its pivotal movement upon the rod 30.

A spindle 36 extends outwardly from the plate 31 and has a grain-Wheel37 revolubly mounted thereon, this grain-wheel projecting below theplate 31 for engagement of the ground, and by reason of the adjustmentof the plate described in the foregoing the grainwheel may be moved tosupport the free end of the cutter-bar at different distances from theground to correspond with the adjustment of the inner end of thecutter-bar. It will be understood that the wheel 37 is used only whenthe mower is employed in cutting weeds, as mentioned above, the wheelbeing removable to permit the plate 31 to rest against the ground. inthe manner of the usual drag when the machine is used as a harvester forgrain or other product.

The wall 14 of the supplemental frame has a forwardly-extending andupwardly-curved plate 38 at its lower edge, which projects beyond thewall 13, thus acting as a guard for this frame and the parts mountedtherein to prevent their being struck by stone or other obstructions inthe path of the machine, and to support this guard-plate a downwardlyand rearwardly extending tongue 39 is formed upon the wall 13 andextends through the opening 40 in the plate 38, the tongue being turnedto rest against the under surface of the plate.

A cable 41 is secured at one end to the cutter-bar and is passed arounda pulley 42,,

1. In a machine of the class described, the combination with a wheeledframe, of guides carried by the frame, pillow-blocks mounted in theguides for vertical movement, a crankshaft journaled in the pilow-blocks, a cutterbar pivotally connected at its inner endwith thecrank-shaft to permit movement ofthe cutterbar'vertically, saidcutter-bar carrying a reciprocatory knife-bar, operative connectionbetween the crank of the shaft and the knife bar for simultaneousoperation thereof, means for moving the cutter-bar pivotally,'saidcutter-bar being movable bodily with the pillow-blocks in a verticalplane, means for varying the downward movement of the cutter-bar withthe pillow-blocks and an adjustable support for the outer end of thecutter-bar.

2. A machine of the class described comprising a wheeled frame, alaterally-extending supplemental frame carried by the firstnamed frame,said supplemental frame including spaced walls having alining verticalslots therein, said walls also having vertical series of aliningperforations, pillow-blocks slidably mounted in the slots for verticalmovement, a shaft journaled in the pillowblocks and having a crankbetween its ends, a cutter-bar having spaced wings at its inner enddisposed with its wings in the supplemental frame, said wings havingbearings therein in which the shaft is revolubly engaged, saidcutter-bar including a reciprocatory knife-bar, a link connected withthe crank and with the knife-bar for operation of the latter when theshaft is revolved, connections between the shaft and one of the wheelsof the frame for rotation of the shaft when the wheel is revolved, avertically-adjustable supporting-wheel removably connected with theouter end of the cutter-bar and a rod arranged for interchangeableengagement in the alining perforations of the vertical series for thereception of the cutterbar thereupon to hold the latter at differentpoints of its vertical movement.

3. In a mower, the combination with a frame of a laterally-extendingsupplemental frame carried thereby, said. supplemental frame includingfront and rear walls, a for: wardly-extending upwardly-curved platecarried by the lower end of the rear wall, a supporting-finger carriedby the front wall and CARL LORENSON.

Witnesses:

E. L. BRIDGES, OLOF OLSON.

